[jdk21u-dev] RFR: 8341261: Tests assume UnlockExperimentalVMOptions is disabled by default

Wed Oct 9 18:20:54 UTC 2024

Backport of test changes that ease Graal integration.

Unclean due to [JDK-8236736](https://bugs.openjdk.org/browse/JDK-8236736) changing notproduct JVM flags to develop flags, removing the [test of notproduct options](https://github.com/openjdk/jdk/commit/bea493bcb86370dc3fb00d86c545f01fc614e000#diff-e3ce20490186bd16e73f192a52ee093fbaac7cd498d99f8fec44ab42571d3eaeR57-L64) as of jdk23-ga.

For completeness, I've also requested this for jdk23u at https://github.com/openjdk/jdk23u/pull/137

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Commit messages:
 - Backport 1bdd79e7b2086197ab64161e89bbe8cc180f07ed

Changes: https://git.openjdk.org/jdk21u-dev/pull/1025/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1025&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341261
  Stats: 68 lines in 3 files changed: 44 ins; 6 del; 18 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1025.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1025/head:pull/1025

PR: https://git.openjdk.org/jdk21u-dev/pull/1025